What causes a purge valve failure? A purge valve is just a solenoid operated valve. The solenoid move a plunger that opens or closes the valve. So it can fail electrically or mechanically. Here’s what causes a purge valve failure: Want to know the symptoms of a bad purge valve? See this post Electrical purge valve failure A short or open in the solenoid windings would set a purge valve circuit code.That kind of purge valve failure would set a check engine light and one of these trouble codes P0443 … Read More

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